"Witchcraft" Today
Today, most books about witchcraft are fiction. Harry Potter (J.K.Rowling) is a great example. Every author has a different definition for "magic."
In the Harry Potter books, witchcraft is a tool used to make witches and wizards lives easier since they don't have non-magic items like computers, telephones, airplanes etc. There is nothing bad or harmful about it, except in the books there are some characters who choose to use magic for evil. But that's just so the story can have a plot.
In The Magic Finger, (Roald Dahl), a girl cannot control her powers and makes strange things happen to people she is angry at.
But beliefs of witchcraft are still around. The Harry Potter books are banned in some schools. A girl was suspended for supposedly casting a spell on a teacher in the United States.